BIM Notes – Page 55

JAVA 2018 Old Paper Solutions

December 18, 2021BIM NotesLeave a Comment

Year 2018 Q.no 11

import java.util.Scanner;
public class matrix {
    public static void main(String args[]){
        int i,j = 0,s=0;
        int a[][]=new int[2][3];
        Scanner sc=new Scanner(System.in);
        System.out.println("enter the elements in matrix");
        for(i=0;i&lt;2;i++){
            for(j=0;j&lt;3;j++){
                a[i][j]=sc.nextInt();
                s=s+a[i][j];
            }
        }
        System.out.println("sum="+s);
    }
}

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import java.util.Scanner;

public class matrix {

public static void main(String args[]){

int i,j = 0,s=0;

int a[][]=new int[2][3];

Scanner sc=new Scanner(System.in);

System.out.println("enter the elements in matrix");

for(i=0;i<2;i++){

for(j=0;j<3;j++){

a[i][j]=sc.nextInt();

s=s+a[i][j];

}

System.out.println("sum="+s);

}

Q.no 13

import java.util.*;
import java.lang.*;
abstract class Y2018q13 {
    abstract void putdata(String b, int a, int c);
    abstract void getdata();
}
class Airplane extends Y2018q13 {
    int code;
    String name;
    int capacity;
    void putdata(String b, int a, int c) {
        code = a;
        name = b;
        capacity = c;
    }
    void getdata() {
        System.out.println("code=" + code + " name=" + name + " Capacity=" + capacity);
    }
}
class Apply {
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        Airplane ab = new Airplane();
        System.out.println("Enter name  code and capacity");
        ab.putdata(sc.nextLine(), sc.nextInt(), sc.nextInt());
        ab.getdata();
    }
}

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import java.util.*;

import java.lang.*;

abstract class Y2018q13 {

abstract void putdata(String b, int a, int c);

abstract void getdata();

}

class Airplane extends Y2018q13 {

int code;

String name;

int capacity;

void putdata(String b, int a, int c) {

code = a;

name = b;

capacity = c;

}

void getdata() {

System.out.println("code=" + code + " name=" + name + " Capacity=" + capacity);

}

class Apply {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

Airplane ab = new Airplane();

System.out.println("Enter name code and capacity");

ab.putdata(sc.nextLine(), sc.nextInt(), sc.nextInt());

ab.getdata();

}

Q.no 14

import java.util.Scanner;
/**
 *
 * @author bim study notes
 */
 class y2018q14 {
    public static void main(String args[]){
        System.out.println("Enter the size of array");
        int a=new Scanner(System.in).nextInt();
        String s[]=new String[a];
        System.out.println("Enter "+a+" String");
        for(int i=0;i&lt;a;i++){
            s[i]=new Scanner(System.in).next();
        }
        for(int i=0;i&lt;a;i++){
            s[i]=s[i].replace('i', '!');
        }
         System.out.println("After replace\n\n");
        for(int i=0;i&lt;a;i++){
           System.out.println(s[i]);
        }
    }
}

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import java.util.Scanner;

/**

*

* @author bim study notes

*/

class y2018q14 {

public static void main(String args[]){

System.out.println("Enter the size of array");

int a=new Scanner(System.in).nextInt();

String s[]=new String[a];

System.out.println("Enter "+a+" String");

for(int i=0;i<a;i++){

s[i]=new Scanner(System.in).next();

}

for(int i=0;i<a;i++){

s[i]=s[i].replace('i', '!');

}

System.out.println("After replace\n\n");

for(int i=0;i<a;i++){

System.out.println(s[i]);

}

Q.no 15

import java.io.*;
import java.util.*;
/** * * @author bim study notes */
public class y2018q15 {
    public static void main(String args[]) {
        try {
            String add, name, clz;
            int i;
            File f = new File("c:\\myjava");
            if (!f.exists()) {
                f.mkdir();
            }
            File f1 = new File(f, "student.txt");
            FileWriter f2 = new FileWriter(f1);
            System.out.println("name address clz");
            name = new Scanner(System.in).next();
            add = new Scanner(System.in).next();
            clz = new Scanner(System.in).next();
            f2.write(" Name=" + name + " add=" + add + " clz=" + clz);
            System.out.println();
            f2.flush();
            File f3 = new File(f, "pupil.txt");
            FileReader f4 = new FileReader(f1);
            FileWriter f5 = new FileWriter(f3);
            int c;
            {
                while ((c = f4.read()) != -1) {
                    f5.write((char) c);
                }
            }
            f5.flush();
            FileReader f6 = new FileReader(f3);
            while ((c = f6.read()) != -1) {
                System.out.print((char) c);
            }
        } catch (Exception e) {
			System.out.println(e);
        }
    }
}

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import java.io.*;

import java.util.*;

/** * * @author bim study notes */

public class y2018q15 {

public static void main(String args[]) {

try {

String add, name, clz;

int i;

File f = new File("c:\\myjava");

if (!f.exists()) {

f.mkdir();

}

File f1 = new File(f, "student.txt");

FileWriter f2 = new FileWriter(f1);

System.out.println("name address clz");

name = new Scanner(System.in).next();

add = new Scanner(System.in).next();

clz = new Scanner(System.in).next();

f2.write(" Name=" + name + " add=" + add + " clz=" + clz);

System.out.println();

f2.flush();

File f3 = new File(f, "pupil.txt");

FileReader f4 = new FileReader(f1);

FileWriter f5 = new FileWriter(f3);

int c;

{

while ((c = f4.read()) != -1) {

f5.write((char) c);

}

f5.flush();

FileReader f6 = new FileReader(f3);

while ((c = f6.read()) != -1) {

System.out.print((char) c);

}

} catch (Exception e) {

System.out.println(e);

}

Q.no 17

package t3rdsem;
/** * * @author bim study notes */
 class A1 {
    void msg()
    {
        System.out.print("a");
    }
    class B{
        void msg()
        {
            System.out.print("b");
        }
        class C extends A1
                {
                public ststic void main(String args[])
                {
                    C obj=new C();
                    obj.msg;
                }
    }
        }
    }
    }

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package t3rdsem;

/** * * @author bim study notes */

class A1 {

void msg()

{

System.out.print("a");

}

class B{

void msg()

{

System.out.print("b");

}

class C extends A1

{

public ststic void main(String args[])

{

C obj=new C();

obj.msg;

}

JAVA 2017 Old Paper Solutions || BIM STUDY NOTES

December 18, 2021BIM NotesLeave a Comment

Year 2017 Q.no 11

public class tu17Q11 {
    public static void main(String[] args) {
        int n,i;
        System.out.println("Enter the number of numbers to enter");
        Scanner sn=new Scanner(System.in);
        n=sn.nextInt();
        System.out.println("Enter the numbers");
         int num[];
        for(i=0;i&lt;n;i++){
          num[i]=sn.nextInt();
          if(num[i]%2==0&amp;&amp;num[i]%3==0){
              System.out.println(num[i]);
          }
        }
    }
}

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public class tu17Q11 {

public static void main(String[] args) {

int n,i;

System.out.println("Enter the number of numbers to enter");

Scanner sn=new Scanner(System.in);

n=sn.nextInt();

System.out.println("Enter the numbers");

int num[];

for(i=0;i<n;i++){

num[i]=sn.nextInt();

if(num[i]%2==0&&num[i]%3==0){

System.out.println(num[i]);

}

Q.no 12

/** * * @author bim study notes */
class Student {
    int roll_no;
    public void readRoll(int r){
        roll_no=r;
    }
    public void displayRoll(){
        System.out.println(roll_no);
    }
}
class Test extends Student{
    int markJava,markWeb;
    public void readMarks(int mj,int mw){
        markJava=mj;
        markWeb=mw;
    }
    public void displayMarks(){
        System.out.println("Java:"+markJava+" "+"Web:"+markWeb);
    }
}
 class Results extends Test{
    int total;
        public void calculate(){
            total=markJava+markWeb;
        }
        public void display(){
            System.out.println("The total marks is :"+total);
        }
        public static void main(String[] args) {
        Results obj=new Results();
        obj.readRoll(1);
        obj.readMarks(49,40);
        obj.calculate();
        obj.displayRoll();
        obj.displayMarks();
        obj.display();
        }
}

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/** * * @author bim study notes */

class Student {

int roll_no;

public void readRoll(int r){

roll_no=r;

}

public void displayRoll(){

System.out.println(roll_no);

}

class Test extends Student{

int markJava,markWeb;

public void readMarks(int mj,int mw){

markJava=mj;

markWeb=mw;

}

public void displayMarks(){

System.out.println("Java:"+markJava+" "+"Web:"+markWeb);

}

class Results extends Test{

int total;

public void calculate(){

total=markJava+markWeb;

}

public void display(){

System.out.println("The total marks is :"+total);

}

public static void main(String[] args) {

Results obj=new Results();

obj.readRoll(1);

obj.readMarks(49,40);

obj.calculate();

obj.displayRoll();

obj.displayMarks();

obj.display();

}

Q.no 13

interface Shape{
  public void get_data(int l,int b);
  public void display_area();
}
class Rectangle implements Shape{
    int length,breadth,area;
    public void get_data(int l,int b){
         length=l;
         breadth=b;
    }
    public void display_area(){
        area=length*breadth;
        System.out.println("The area of rectangle is:"+area);
    }
}
class Square implements Shape{
    int length,breadth,area;
    public void get_data(int l,int b)
    {
        length=l;
    }
    public void display_area(){
        area=length*length;
        System.out.println("The area of Square is:"+area);
    }
}
public class tu17Q13 {
    public static void main(String[] args) {
        Rectangle obj=new Rectangle();
        obj.get_data(10, 20);
        obj.display_area();
        Square obj1=new Square();
        obj1.get_data(10, 0);
        obj1.display_area();
    }
}

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interface Shape{

public void get_data(int l,int b);

public void display_area();

}

class Rectangle implements Shape{

int length,breadth,area;

public void get_data(int l,int b){

length=l;

breadth=b;

}

public void display_area(){

area=length*breadth;

System.out.println("The area of rectangle is:"+area);

}

class Square implements Shape{

int length,breadth,area;

public void get_data(int l,int b)

{

length=l;

}

public void display_area(){

area=length*length;

System.out.println("The area of Square is:"+area);

}

public class tu17Q13 {

public static void main(String[] args) {

Rectangle obj=new Rectangle();

obj.get_data(10, 20);

obj.display_area();

Square obj1=new Square();

obj1.get_data(10, 0);

obj1.display_area();

}

Q.no 14

public class tu17Q14 {
    public static void main(String[] args) {
      String []country={"Nepal","USA","Australia","Brazil","Paragua","Canada"};
        int i;
        for(i=0;i&lt;6;i++){
          if(country[i].endsWith("a")){
              System.out.println(country[i]);
          }
        }
    }
}

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public class tu17Q14 {

public static void main(String[] args) {

String []country={"Nepal","USA","Australia","Brazil","Paragua","Canada"};

int i;

for(i=0;i<6;i++){

if(country[i].endsWith("a")){

System.out.println(country[i]);

}

1

17.Explain user defined exception in java with a suitable example. In java we can create our own exception class and throw that exception using throw keyword. These exceptions are known as user-defined or custom exceptions.

class JavaException{
   public static void main(String args[]){
  try{
       throw new MyException(2);
       // throw is used to create a new exception and throw it.
  }
 catch(MyException e){
    System.out.println(e) ;
 }
}
}
class MyException extends Exception{
   int a;
   MyException(int b) {
     a=b;
   }
   public String toString(){
     return ("Exception Number =  "+a) ;
  }
}

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class JavaException{

public static void main(String args[]){

try{

throw new MyException(2);

// throw is used to create a new exception and throw it.

}

catch(MyException e){

System.out.println(e) ;

}

class MyException extends Exception{

int a;

MyException(int b) {

a=b;

}

public String toString(){

return ("Exception Number = "+a) ;

}

JAVA 2016 Old Papers Solutions

December 18, 2021BIM NotesLeave a Comment

Year 2016 Q.no 11

public class tu16Q11 {
    public static void main(String[] args) {
        int [] a={1,22,23,3,4,67,87,23,56,35,47,5,61,7,80,9,23,23,45,456,345,67,0,23,45,67,87,1,3,4};
        for(int i=0;i&lt;30;i++){
            if(a[i]&gt;16 &amp;&amp;a[i]&lt;47){
                System.out.println(a[i]);
            }
        }
    }
    }
or
/** * * @author bim study notes */
import java.util.*;
public class ArrayDemo {
 public static void main(String[] args) {
 int arr[] = new int[30];
 Random r = new Random();
 int i;
 for(i=0;i&lt;arr.length;i++){
 int num = r.nextInt()%50;
 arr[i] = num;
 }
 for(i=0;i&lt;arr.length;i++){
 if(arr[i]&gt;16&amp;&amp;arr[i]&lt;47)
 System.out.print(arr[i]+" ");
 }
}
}

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public class tu16Q11 {

public static void main(String[] args) {

int [] a={1,22,23,3,4,67,87,23,56,35,47,5,61,7,80,9,23,23,45,456,345,67,0,23,45,67,87,1,3,4};

for(int i=0;i<30;i++){

if(a[i]>16 &&a[i]<47){

System.out.println(a[i]);

}

or

/** * * @author bim study notes */

import java.util.*;

public class ArrayDemo {

public static void main(String[] args) {

int arr[] = new int[30];

Random r = new Random();

int i;

for(i=0;i<arr.length;i++){

int num = r.nextInt()%50;

arr[i] = num;

}

for(i=0;i<arr.length;i++){

if(arr[i]>16&&arr[i]<47)

System.out.print(arr[i]+" ");

}

Q.no 12 Create two classes ThreadA and ThreadB which implement Runnable interface. ThreadA displays all even numbers from 50 to 100 and ThreadB displays all odd numbers from 100 to 200. Define a main class which creates the objects of both the classes and displays the numbers as per […]

JAVA 2015 Old paper Solutions

December 18, 2021BIM NotesLeave a Comment

Year 2015 Group B Q.no 11 Write a Java Program to display all the even numbers from 1 to 500

public class tu15Q11 {
    public static void main(String[] args) {
        int i;
        for(i=1;i&lt;=500;i++){
            if(i%2==0){
            System.out.println(i);
            }
        }
    }
    }
/** * * @author bim study notes */

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public class tu15Q11 {

public static void main(String[] args) {

int i;

for(i=1;i<=500;i++){

if(i%2==0){

System.out.println(i);

}

/** * * @author bim study notes */

12. Make a thread using Runnable interface to display numbers from 1 to 20, each number should be displayed in the interval of 2 seconds.

class ThreadNum implements Runnable{
public void run(){
try{
for(int i=1;i&lt;=20;i++){
System.out.print(i+" ");
Thread.sleep(2000);
}
}catch(InterruptedException e){
System.out.println("Thread Interrupted");
}
}
}
/** * * @author bim study notes */
public class EvenNumThreadDemo {
public static void main(String[] args) {
ThreadNum n = new ThreadNum();
Thread t = new Thread(n);
t.start();
}
}

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class ThreadNum implements Runnable{

public void run(){

try{

for(int i=1;i<=20;i++){

System.out.print(i+" ");

Thread.sleep(2000);

}

}catch(InterruptedException e){

System.out.println("Thread Interrupted");

}

/** * * @author bim study notes */

public class EvenNumThreadDemo {

public static void main(String[] args) {

ThreadNum n = new ThreadNum();

Thread t = new Thread(n);

t.start();

}

13. Write a program that reads line of […]

JAVA Model Questions || BIM STUDY NOTES

December 18, 2021BIM NotesLeave a Comment

Model Questions Write a Java program to display all the numbers between -300 to -1 which when divided by 17 gives 7 as remainder and also displays sum of those numbers.

public class Sum {
    public static void main(String[] args) {
        int i,s=0;
        for(i=-300;i&lt;-1;i++)
        {
            if(i%17==-7){
            System.out.print(i+ " ");
            s = s+i;
            }
        }
            System.out.println("The sum = "+s);      
    }   
}

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public class Sum {

public static void main(String[] args) {

int i,s=0;

for(i=-300;i<-1;i++)

{

if(i%17==-7){

System.out.print(i+ " ");

s = s+i;

}

System.out.println("The sum = "+s);

}

3.Make two threads, one displays odd number after one second and another thread display even number after half second between -200 and -10. […]

Author: BIM Notes

JAVA 2018 Old Paper Solutions

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JAVA 2016 Old Papers Solutions

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JAVA Model Questions || BIM STUDY NOTES

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